Question

find f(-3) for the equation below f(x)=-2x+3

Answer 1

In this problem, we are applying function notation. When we see a function written as

$f(x),$

we read it as "f of x" or "f as a function of x."

We will take the value of x and substitute it into the quation.

The function rule states

$f(x)=-2x+3$

Since we are given f(-3), we will substitute each x-value (inside parentheses), and simplify:

$f(-3)=-2(-3)+3=6+3=9$

Therefore, f(-3) = 9.